Fermentation
noun, する verb, の adjective
When you ferment something it makes a departure from what it originally was and transforms during fermentation into something new.
はっこう
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
ワインの甘みを残して発酵を止める方法を教えてください。
Please teach me how to keep the sweetness in wine and stop fermentation.